"Thanks for the notice 20min late.. The weather isn't even bad. Spent $300 on tickets n $30 on über [sic] n now I'm standing here with my d--k in my hand because you gave no notice," said one angry user on their Facebook page.

"Drove 10 hours to go to this, all the while you guys assuring everyone that the show would definitely go on despite the weather. Spent all my gas money to get here, and you cancel it 30 minutes AFTER it was supposed to open? Been going to this rally for years, first year not going as a local and this is f-----g ridiculous," said another.

"I love how yesterday you guys posted that snow won't cancel the show and you referenced Christmas parades and then today after the initial time of the rally you decide to cancel? S----y move. You better issue refunds to those of us who paid for tickets, who knows when you will reschedule it and who knows if everyone who already planned for today will be able to go on the new date," added another disgruntled would-be participant.

The new concert date and additional information will be released on the Denver 4/20 rally website
in the near future, Lopez said in a statement.